2. Let nano lithium silicate curing agent penetrate into the concrete surface.
3. The concrete should be kept moist before hardening, so that the curing agent can effectively penetrate into the concrete surface.
4. When the concrete hardener begins to decompose, the surface should be carefully covered and protected until the hardener is completely cured.
5. The solidified concrete-cement structure will be hardened, and its strength, waterproofness and durability will be improved.